WorldViz User Forum - window.pick function over sub-window

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window.pick function over sub-window

Hi,

I have a function that examines all the pixels of the MainWindow using the window.pick function. The problem is that when I use a sub-window instead of MainWindow, I get strange results. Specially, the window.pick command returns "no object" over the portion of the MainWindow that hasn't been occupied by the sub-window. My question is, does the window.pick function works with sub-windows?

Best,
Omid

The window.pick function only works for that window. You will have to call the pick function for the specific window you are interested in. You can use the viz.window.select command to get the current sub-window located at the specified screen position. I just noticed that this command is currently undocumented, so here is some example code showing how to use it:

Code:

# Get the sub-window located at the current mouse position

window = viz.window.select()



# Get the window located at the center of the screen

window = viz.window.select([0.5,0.5])



# Get the window located at pixel location (100,100)

window = viz.window.select([100,100],mode=viz.WINDOW_PIXELS)

I think I didn't describe the problem clearly. Imagine I created a window:

Code:

        UpperRightWindow = viz.addWindow()

        UpperRightWindow.position (0.6, 1.0)

        UpperRightWindow.size(0.4, 0.4)

        UpperRightWindow.visible(0,viz.SCREEN)



        RightEye = viz.add(viz.VIEWPOINT)

        RightEye.eyeheight(0)

        rightLink = viz.link(avatar.getBone('Bip01 Head'),RightEye)



        UpperRightWindow.viewpoint(RightEye)

        UpperRightWindow.clip(0.00001, 50000)

Then I want to determine what object lies at any pixel:

Code:

        xres = 200

        yres = 200

        size = (xres, yres)



        for x in xrange(xres):

                for y in xrange(yres):

                        xNorm = x/(xres*1.0)

                        yNorm = 1-y/(yres*1.0)

                        intersect = UpperRightWindow.pick(True, viz.WORLD, pos = [xNorm, yNorm])

                        if intersect.valid == True:

                                print "pixel " + str(x) + "," + str(y) + "," + intersect.name + "," + str(intersect.point)

                        else:

                                print "no object at " + str(x) + "," + str(y)

This function works correctly with viz.MainWindow but not with the new UpperRightWindow.

Am I doing anything wrong?

Best,
Omid

Quote:

Originally Posted by farshizzo (Post 8692)

Code:

# Get the sub-window located at the current mouse position

window = viz.window.select()



# Get the window located at the center of the screen

window = viz.window.select([0.5,0.5])



# Get the window located at pixel location (100,100)

window = viz.window.select([100,100],mode=viz.WINDOW_PIXELS)

Are the coordinates you are passing to the pick function relative to the lower-left corner of the sub-window, or the lower-left corner of the graphics window? The pick function expects coordinates that are relative to the lower-left corner of the graphics window. Here is a simple script showing that picking does work with sub-windows:

Code:

import viz

viz.go()



viz.mouse(0)

viz.clearcolor(viz.GRAY)



#Add sub-windows

window = viz.addWindow(view=viz.addView(scene=2),pos=(0.8,1))

window = viz.addWindow(view=viz.addView(scene=3),pos=(0,1))

window = viz.addWindow(view=viz.addView(scene=4),pos=(0,0.2))

window = viz.addWindow(view=viz.addView(scene=5),pos=(0.8,0.2))



#Add quad to each window

viz.addTexQuad(pos=(0,1.8,2),color=viz.WHITE,scene=1)

viz.addTexQuad(pos=(0,1.8,2),color=viz.RED,scene=2)

viz.addTexQuad(pos=(0,1.8,2),color=viz.GREEN,scene=3)

viz.addTexQuad(pos=(0,1.8,2),color=viz.BLUE,scene=4)

viz.addTexQuad(pos=(0,1.8,2),color=viz.YELLOW,scene=5)



def dopick():

        win = viz.window.select()

        if win:

                node = win.pick()

                if node:

                        node.runAction(vizact.sizeTo(size=[2,2,1],time=0.1))

                        node.addAction(vizact.sizeTo(size=[1,1,1],time=0.1))

vizact.onmousedown(viz.MOUSEBUTTON_LEFT,dopick)

Thanks. Yes the problem was relativity to the graphics window.